Findings

What do systematic reviews say?

4 questions · 4 findings · 1 reviews

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No studies found 0 · 0%GRADE not reported 3 · 75%Very low 1 · 25%Low 0 · 0%Moderate 0 · 0%High 0 · 0%

Schwarz appliance vs No active treatment (control)

Size of the lower jaw (arch length, change) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth

Schwarz appliance showed no clear difference in size of the lower jaw (mandibular arch length, change) at 9 months compared with no active treatment (control); GRADE not reported.

1 finding from 1 review

Orthodontic treatment for crowded teeth in children 2021 · Cochrane All outcomes
9 months
MD 0.11 [-0.46, 0.68]
1 study · 28 participants
GRADE not reported

Schwarz appliance vs No active treatment (control)

Amount of crowding (change in mandibular crowding) at 8 weeks · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth

It is very uncertain whether schwarz appliance changes amount of crowding (lower arch crowding, change) at 9 months compared with no active treatment (control) (very low certainty).

1 finding from 1 review

Orthodontic treatment for crowded teeth in children 2021 · Cochrane All outcomes
9 months (after 6 months treatment)
MD -2.14 [-2.79, -1.49]
1 study · 28 participants
Very low

Schwarz appliance vs No active treatment (control)

Position of the incisors (upper incisor inclination) · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth

Schwarz appliance showed no clear difference in upper incisors to maxilla (inclination, degrees) at 9 months compared with no active treatment (control); GRADE not reported.

1 finding from 1 review

Orthodontic treatment for crowded teeth in children 2021 · Cochrane All outcomes
9 months
MD 0.33 [-2.26, 2.92]
1 study · 28 participants
GRADE not reported

Schwarz appliance vs No active treatment (control)

Lower incisors to mandible (position, mm) at 9 months · Children or adolescents (aged 16 years old or under) receiving orthodontic treatment to prevent or correct crowded teeth

Schwarz appliance led to higher lower incisors to mandible (position, mm) at 9 months compared with no active treatment (control); GRADE not reported.

1 finding from 1 review

Orthodontic treatment for crowded teeth in children 2021 · Cochrane All outcomes
9 months
MD 0.39 [0.11, 0.67]
1 study · 28 participants
GRADE not reported